回答編集履歴
1
chousei
answer
CHANGED
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@@ -1,1 +1,42 @@
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とりあえずcsvのメソッドは$.csv.toArrays()
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とりあえずcsvのメソッドは$.csv.toArrays()
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# sample
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csvの取り込み部分だけjQueryを利用しておきます
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```javascript
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<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-csv/1.0.3/jquery.csv.min.js"></script>
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<script>
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window.addEventListener('DOMContentLoaded', async()=>{
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const url='sample.csv';
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const data=await fetch(url).then(res=>res.text());
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var csv=$.csv.toArrays(data);
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[...new Set(csv.map(x=>x[0]))].forEach(x=>{
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ken.appendChild(Object.assign(document.createElement('option'),{value:x,textContent:x}));
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});
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ken.addEventListener('change',e=>{
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const v=e.target.value;
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document.querySelectorAll('#shityouson option').forEach((x,y)=>{
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if(y>0) x.remove();
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});
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csv.filter(x=>x[0]==v).map(x=>x[1]).forEach((x,y)=>{
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shityouson.appendChild(Object.assign(document.createElement('option'),{value:x,textContent:x,"data-idx":y}));
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});
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ichiran.textContent="";
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});
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shityouson.addEventListener('change',e=>{
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const v=csv.filter(x=>x[0]==ken.value && x[1]==shityouson.value);
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ichiran.textContent=v;
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});
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});
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// var ken=[...new Set(data.map(x=>x[0]))];
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</script>
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<select id="ken">
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<option value="">---</option>
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</select>
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<select id="shityouson">
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<option value="">---</option>
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</select>
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<div id="ichiran"></div>
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```
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